/*
 *
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * Contributor(s):
 *   Lan Qiang <jameslan@gmail.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK *****
 */

#ifndef nsIZipIOQueue_h__
#define nsIZipIOQueue_h__

#include "nsIZipIOQueue.h"
#include "nsCOMPtr.h"
#include "nsIZipFileIO.h"
#include "nsIThread.h"

class nsZipIOCommand;
class nsZipIOQueue : public nsIZipIOQueue
{
public:
	NS_DECL_ISUPPORTS
	NS_DECL_NSIZIPIOQUEUE

	nsZipIOQueue();

private:
	~nsZipIOQueue();
	nsresult PushCommand(nsZipIOCommand *cmd);
	nsresult PopCommand(nsZipIOCommand **cmd);
	friend class nsZipIOWorker;

	nsCOMPtr<nsIZipFileIO>   mZipIO;
	PRUint32                 mActionCount;
	nsZipIOCommand*          mHead;
	nsZipIOCommand*          mRear;
	PRLock*                  mLock;
	nsCOMPtr<nsIThread>      mWorkerThread;
};

#define NS_ZIPIOQUEUE_CLASSNAME "nsZipIOQueue"

// {160C2626-6052-4043-A3EB-A55B8BD2D4C5}
#define NS_ZIPIOQUEUE_CID                                      \
{                                                              \
	0x160c2626,                                            \
	0x6052,                                                \
	0x4043,                                                \
	{ 0xa3, 0xeb, 0xa5, 0x5b, 0x8b, 0xd2, 0xd4, 0xc5 }     \
}

#endif
